Nondestructive inspection apparatus for heat-transfer tubes in b

Details Nondestructive inspection apparatus for heat-transfer tubes in b Nondestructive inspection apparatus for heat-transfer tubes in b

1989-03-13

1989-08-15

Raevis, Robert R.

Measuring and testing

Inspecting

G02B 600

Patent

active

048563536

ABSTRACT:
When a measuring instrument is inserted through a header into a boiler heat-transfer tube so as to carry out inspection, a guide for insertion of the measuring instrument is positively and correctly aligned with a heat transfer tube hole of the header.

REFERENCES:
patent: 3481660 (1969-12-01), Sheldon
patent: 3809072 (1974-05-01), Ersek et al.
patent: 4273109 (1981-06-01), Enderby
patent: 4398796 (1983-08-01), Dalgoutte et al.
patent: 4597294 (1986-07-01), Brill, III et al.

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